How To Make A Face Mask With HEPA Filter . A Printable ...
We’ll be cutting two cotton lining pieces, two pattern pieces of your main body face mask and two pieces of your filter cut out of your vacuum bag. You’ll sew these in place using a standard straight stitch at a 5/8″ seam allowance. Your seam allowances are already added to your sewing pattern so there’s no need to add extra.